Editing Cosworth (section)

===The SCA series===
A year before the introduction of the MAE, the single overhead cam two valve '''SCA''' was introduced. It was a 997&nbsp;cc engine based on [[Ford Cortina]] 116E block that was designed for [[Formula 2]], and featured the first totally Cosworth-designed head, Laystall forged crankshaft, steel main bearing caps and pistons with only one compression ring and one oil scraper ring each. Cylinder head to block sealing was by a head gasket incorporating [[Wills Ring|Cooper Ring]]s. The basic configuration was quite similar to [[Coventry Climax#FW|Coventry Climax FWE]] on [[Lotus Elite]] including its [[SOHC]] [[Reverse-flow cylinder head|reverse-flow]] design, except for a series of seven spur gears (one on the crank, two intermediary gears on two fixed shafts mounted on the front cover back plate, one on the 116E camshaft used as a jackshaft, two on a common fixed shaft in the head, and one on the camshaft) driving a five-bearing camshaft and the Ford five main bearing iron block. The intake ports and the oil scavenge pickup for dry sump lubrication were canted 25 degrees, so they faced straight up and down, respectively, when the engine was mounted 25 degrees from vertical to the right for a lower centre of gravity.

The SCA initially had two 40DCM2 Weber twin-choke downdraft sand-cast carburettors mounted on top to produce 115&nbsp;hp, which was replaced by Lucas fuel injection in 1966, eventually reaching 140&nbsp;hp.

{{anchor|SCB}}
The longer stroke '''SCB''' was built to compare against the 1,498&nbsp;cc [[#Mk.XVI|Mk.XVI]], and upon proving its superior power against the [[Harry Mundy|Mundy]]-designed two-valve crossflow DOHC head, it acted as the benchmark for the development of [[#The FVA series|FVA]] to measure the benefits and shortcomings of a four valve crossflow DOHC design. It was the results of this four valve development work that formed the basis for many of the Cosworth engines that followed.

{{anchor|SCC}}A larger 85&nbsp;mm bore SCC with the same short-stroke five-bearing crankshaft as the SCA was built and sold for [[Sports Car Club of America|SCCA]] 1.1 litre sports car class.
{| class="wikitable"
|-
! Type !! Year !! Block !! Displacement !! Claimed !! Description !! Mainly For
|-
| SCA || 1964 || 116E || 997 cc || 115–140&nbsp;bhp || Gear-driven SOHC, reverse-flow || [[Formula Two]]
|-
| SCB || 1964 || 116E || 1,498 cc || 175&nbsp;bhp || Experimental || Development of [[#FVA|FVA]]
|-
| SCC || 1965 || 116E || 1,098 cc || 135&nbsp;bhp || SCA with larger bore || North American sports car racing
|}

{{anchor|FVA}}